timmmay: This drive (WD Black) has no reallocated sectors, and the SMART software's happy. If that count increases even by 1 it reports it to me.
WD Black do seem like good drives, but pretty pricey these days. They have a good warranty.
If you constantly write to a drive maybe you should use an SSD, to minimise moving parts. Interested to hear about your weather station too, i've been half looking for a good temperature monitoring solution with multiple sensors for a while.
What's the ballpark to create a system that would have temperature monitors in maybe 6 places? Not too bothered about general weather, just to figure out things like heating, cooling, and insulation. Probably more than I want to pay, just curious :)